Deductions

Yes, you can include the sales tax you paid when you purchased your car as a deduction on your Federal return.  It will be added to other possible itemized deduction items to determine if it is more beneficial to claim the standard deduction or itemized deductions.

Use the following steps to get started:

• On the top row of the TurboTax online screen, click on Search (or for CD/downloaded TurboTax locate the search box in the upper right corner) 
• This opens a box where you can type in “sales tax” (be sure to enter exactly as shown here) and click the magnifying glass (or for CD/downloaded TurboTax, click Find)
• The search results will give you an option to “Jump to sales tax”
• Click on the blue “Jump to sales tax” link and enter your information

Also, take a look at the following TurboTax help article for more information:

Can I claim the sales tax deduction?